For an addon to fall into the Ace2 category it must be built from ace2 definition libraries.  And, like all Ace2 addons, Bartender3 lets you simply right click the bartender icon on your fubar --> profiles --> Coretwo of Gorgonnash, go back to profiles again and select "Copy from default" to get your settings that were prior set to default.

 Notice that my paladin and mage have VASTLY different layouts, all using the exact same wowace mods?  Both Garreth and Pulse have their own profiles set for each mod.  Makes multi-toon a dream come true!